def automem(argv):
ctype = argument(argv, 0, Type)
if len(argv) >= 2:
n = argument(argv, 1, Integer).value
size = simple.sizeof_a(ctype, n)
else:
n = 1
size = simple.sizeof(ctype)
pointer = lltype.malloc(rffi.VOIDP.TO, size, flavor='raw')
return systemv.AutoMem(systemv.Pointer(ctype), pointer, n)
def automem(ctype, count, clear):
ctype = to_type(ctype)
if count:
n = count.value
size = simple.sizeof_a(ctype, n)
else:
n = 1
size = simple.sizeof(ctype)
pointer = lltype.malloc(rffi.VOIDP.TO, size, flavor='raw')
if is_true(clear):
rffi.c_memset(pointer, 0, size)
return systemv.AutoMem(systemv.Pointer(ctype), pointer, n)
def ref(mem):
#mem = argument(argv, 0, Object)
if isinstance(mem, Mem):
size = simple.sizeof(mem.ctype)
ctype = mem.ctype
elif isinstance(mem, Uint8Data):
size = rffi.sizeof(rffi.VOIDP)
ctype = c_ubytep
else:
raise unwind(LTypeError(u"expected object that can be converted to c-object"))
pointer = lltype.malloc(rffi.VOIDP.TO, size, flavor='raw')
result = systemv.AutoMem(systemv.Pointer(ctype), pointer, 1)
result.setattr(u"to", mem)
return result
def repr(self):
return u"<handle %s from %s>" % (self.name, self.library.name)
module = Module(u'ffi', {
u'array': systemv.Array.interface,
u'bitmask': Bitmask.interface,
u'cfunc': CFunc.interface,
u'handle': Handle.interface,
u'library': Library.interface,
u'mem': Mem.interface,
u'pointer': systemv.Pointer.interface,
u'signed': simple.Signed.interface,
u'struct': systemv.Struct.interface,
u'union': systemv.Union.interface,
u'unsigned': simple.Unsigned.interface,
u'voidp': systemv.Pointer(null),
u'wrap': Wrap.interface,
u'pool': systemv.Pool.interface,
}, frozen=True)
for name in systemv.types:
module.setattr_force(name, systemv.types[name])
def builtin(fn):
module.setattr_force(fn.__name__.decode('utf-8'), Builtin(fn))
return fn
@builtin
@signature(Object)
def addressof(obj):
if isinstance(obj, Handle):
def repr(self):
return u"<handle %s from %s>" % (self.name, self.library.name)
module = Module(u'ffi', {
u'array': systemv.Array.interface,
u'cfunc': CFunc.interface,
u'handle': Handle.interface,
u'library': Library.interface,
u'mem': Mem.interface,
u'pointer': systemv.Pointer.interface,
u'signed': simple.Signed.interface,
u'struct': systemv.Struct.interface,
u'union': systemv.Union.interface,
u'unsigned': simple.Unsigned.interface,
u'voidp': systemv.Pointer(null),
u'wrap': Wrap.interface,
}, frozen=True)
for name in systemv.types:
module.setattr_force(name, systemv.types[name])
def builtin(fn):
module.setattr_force(fn.__name__.decode('utf-8'), Builtin(fn))
return fn
@builtin
@signature(Object, Type)
def cast(obj, ctype):
if isinstance(obj, Handle):
return Handle(obj.library, obj.name, obj.pointer, ctype)
